Reliance Worldwide Corporation Limited is an Australian-owned publicly listed company which designs, manufactures and supplies water flow and control products. It is the world's largest manufacturer of PTC behind the wall plumbing fittings. The company operates in Australia, New Zealand, Canada, the United States, Spain, France, Italy, India and the United Kingdom. It is administered from its head office in Melbourne, Australia. It is 109th on the S&P/ASX list of top 200 companies. Wikipedia